From 7cf188ff61c9ca4c0c51842cdd97c2924ca3dcb9 Mon Sep 17 00:00:00 2001
From: Andrew Johnson <anj@aps.anl.gov>
Date: Fri, 4 Jan 2008 16:52:15 +0000
Subject: [PATCH] Fix issues when char is signed.

---
 src/libCom/calc/postfix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/libCom/calc/postfix.c b/src/libCom/calc/postfix.c
index 8386bfd7d..1d6f2bfb5 100644
--- a/src/libCom/calc/postfix.c
+++ b/src/libCom/calc/postfix.c
@@ -172,7 +172,7 @@ static int
 
     *ppel = NULL;
 
-    while (isspace(**ppsrc)) ++*ppsrc;
+    while (isspace((int) (unsigned char) **ppsrc)) ++*ppsrc;
     if (**ppsrc == '\0') return FALSE;
 
     if (opnd) {